7d97fd5ff8
This moves the new stdscript package from the internal staging area to the txscript module and updates the relevant paths and package README.md accordingly.
58 lines
1.7 KiB
Go
58 lines
1.7 KiB
Go
// Copyright (c) 2021 The Decred developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package stdscript
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// ErrorKind identifies a kind of error.
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type ErrorKind string
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// These constants are used to identify a specific ErrorKind.
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const (
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// ErrUnsupportedScriptVersion indicates that a given script version is not
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// supported.
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ErrUnsupportedScriptVersion = ErrorKind("ErrUnsupportedScriptVersion")
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// ErrTooManyRequiredSigs is returned from MultiSigScript when the
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// specified number of required signatures is larger than the number of
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// provided public keys.
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ErrTooManyRequiredSigs = ErrorKind("ErrTooManyRequiredSigs")
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// ErrPubKeyType is returned when a script contains invalid public keys.
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ErrPubKeyType = ErrorKind("ErrPubKeyType")
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// ErrTooMuchNullData is returned when attempting to generate a
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// provably-pruneable script with data that exceeds the maximum allowed
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// length.
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ErrTooMuchNullData = ErrorKind("ErrTooMuchNullData")
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)
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// Error satisfies the error interface and prints human-readable errors.
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func (e ErrorKind) Error() string {
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return string(e)
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}
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// Error identifies an script-related error.
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//
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// It has full support for errors.Is and errors.As, so the caller can ascertain
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// the specific reason for the error by checking the underlying error.
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type Error struct {
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Err error
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Description string
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}
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// Error satisfies the error interface and prints human-readable errors.
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func (e Error) Error() string {
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return e.Description
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}
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// Unwrap returns the underlying wrapped error.
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func (e Error) Unwrap() error {
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return e.Err
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}
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// makeError creates an Error given a set of arguments.
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func makeError(kind ErrorKind, desc string) Error {
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return Error{Err: kind, Description: desc}
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}
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